Avoiding Initial Memory Heap Size Error

Question

I run a Java code with the following command:

$ java -Xms4G -Xmx4G myjavacode

My cpu\'s RAM capacity is 6GB.

However it always fail

Answer 1

You've exceeded the maximum heap size of your JVM. This is both JVM and OS dependent. In most 32-bit systems the maximum value will be 2Gb, regardless of the physical memory available.